Dry wall angle sander



Dec. 31, 1957 Y c, HQUSER 2,817,931

DRY WALL ANGLE SANDER Filed Aug. 16, 1956 INVENTOR. BURDET E c Hous R-United States Paten O.

DRY WALL ANGLE SANDER Burdette C. Houser, Palmdale, Calif.

Application August 16, 1956, Serial No. 604,415

Claims, (Cl. 51-487) This invention relates to sanders and scrapers forplaster and like walls, particularly an angle dry wall sander and thelike.

The main object of my invention is to provide an effective tool forsanding the corners and angles of a plaster and like wall to make thewall angle clear and clean and particularly free from irregularities.

Another object of my invention is to provide a sander for smoothing thesides of wall angles on finished dry plaster walls to put the same infinal finished condition so that they can be painted.

A further object of this invention is to have a special sander which maybe used with a handle of any selected length, and in fact, with one of aset of difierent lengths in order to make it possible to reach not onlyvarious parts nearby of the corners in walls, but also higher wallcorners and the angles formed by walls and ceilings, etc.

Yet another object of the invention is to have such a sander equippedwith means for gripping emery cloth and sand paper in renewablecondition so that the sander may be sharp and capable of perfectoperation at all times, and not likely to wear out or lose accuracy.

It is, of course a practical object of the invention to make a dry wallangle sander of the character indicated which is simple to use,relatively light in construction, and quickly changed from a long handleto a short handle and vice versa.

An object with a view to economy is also to make such a sander insufiiciently simple form at low cost in order to encourage widedistribution on the market.

Other objects and advantages of my invention will appear in greaterdetail as the specification proceeds.

In order to facilitate ready comprehension of this invention for aproper appreciation of the salient features thereof, the invention isillustrated on the accompanying drawing forming part hereof, and inwhich:

Figure 1 is a vertical transverse section of a sander made according tomy invention and embodying the same in a practical form, the sectionbeing taken on line 1--1 in Figure 2; and

Figure 2 is a front elevation of the sander as seen from the right inFigure 1.

In these views, the same reference numerals indicate the same or likeparts and features.

When plaster walls have been generally formed by plastering, variousparts may still require finishing to render them clean cut and proper inappearance, and this is especially true of corners between walls andbetween the ceiling and the walls, etc. If these corners are manuallysanded, considerable labor is required. Consequently, this situationpresents a problem, and upon considering this problem, it has occurredto me that a sanding tool should be available to present a sandingsurface toward two wall surfaces at an angle simultaneously, while beingself-adjusting within a few degrees, so that an equable pressure may beexerted upon both surfaces to obtain a smooth and satisfactory result.As a con- 2,817,931 Patented Dec. 31, 1957 sequence of suchconsideration, I have succeeded in producing an angle sander along thelines already indicated which will now be described in detail in thefollowing, due reference being bad to the drawing pertaining to theapplication as already alluded to.

Hence, in the practice of my invention, a pair of flat plates 3 and 4are hinged together by means of a hinge formed of the two hinge members5 and 6 secured to the plates and interconnected by means of a hinge pin7, the hinge being preferably a piano hinge. Upon the ends of the hingepin are pivotally mounted the two hinging ends 8, 8 of a bracket 9 thatextends into a slot 10 between the forked ends 11, 11 of a short pipe ortube 12 which is threaded at its outer end 13. This end is adaptedto beengaged by a long handle having a corresponding thread so as to make itpossible for a workman standing on the floor to reach high portions ofthe walls and the ceiling of a room with the device.

However, the bracket may also be connected at two intermediate points toportions of the hinge pin when 1 the hinge itself is as long as theplates 3 and 4. Bracket 9 is retained in association with short tube 12by means of a bolt having a head 14 and a nut 15 screwed on the otherend, this bolt 16 extending transversely through this tube and ends 11as well as bracket 9 and allowing the assembly to swivel about bolt 16when nut 15 is not screwed tight. For the purpose of retaining sandpaper or emery cloth upon the device, two features are included. First,the plates are provided with corresponding blocks of sponge rubber 17and 18 for padding the sand paper, while a pair of sand paper clamps ofsemicircular split tubes 19 and 20 are secured to these plates by meansof clamp screws 21 and 22 extending through the clamps which are securedin place by wing nuts 23 and 24 screwed on these clamp screws 21 and 22.The ends 25 and 26 of a sheet 27 of sand paper are caught under clamps19 and 20 and nuts 23 and 24 and this sheet disposed externally of theplates and their pads 17 and 18 in effective position to engage againstthe surfaces of two walls making a more or less right angled juncturewhen the device is brought into active contact with the wall angles.

On the other hand, in order to ensure that the two plates or wings 3 and4 with their pads and sandpaper associated therewith are maintained atabout apart within a few degrees one way or the other, preferably about94, to the two plates or wings are secured the ends of two arcuate leafsprings 28 and 29 by means of screws or bolts 30, 30, 31 and 31 providedwith spacing nuts 32, 32, etc., and held thereon by outer locking nuts33, 33, etc. The result is that this pair of leaf springs tendresiliently to determine the angle of plates or wings 3 and 4 with theirpads and sandpaper so that the device will automatically fit varyingangles of meeting walls and walls with ceilings. Plates or wings 3 and 4may be made of metal, wood or flat plastic plates, while the other partssuch as hinge, bracket, mounting tube, clamps and bolts, screws and nutsmay all be of metal, if desired.

The arrangement is such that when a long or medium length pipe or handleis screwed to the end 13 of tube 12 and the device completely assembledas described, the device is readily raised to the ceiling or moved upand down in corners of meeting walls to clean and sharpen the finish ofthe wall angles, the device meanwhile adjusting itself both as to theactual angles encountered, and also as to position along the walls byvirtue of the swiveling effect of the bracket on the bracket screw orbolt 16.

The sanding device may be made larger or smaller and of any desired sizeand weight, a light weight being desirable and scarcely larger thanactually shown on the drawing for common use.

Manifestly, variations may be resorted to, and parts and features may bemodified or used without others within the scope of the appended claims.

Having now fully described my invention, I claim:

1. A sander according to the type described, including a pair ofangularly related plates or wings hinged together by means of a hingeformed of two hinge members interconnected by means of a hinge pindefining an included angle, a bracket also pivotally connected to thehinge pin within the angle of the two plates and extending apredetermined distance from between the plates away from said hinge pin,a handle mounting connected to the bracket and adapted to have a handleof selected length attached thereto by which to support the sander as awhole in contact with a wall angle or corner, and means for attaching asheet of sand paper and the like to the plates exteriorly of the anglethereof.

2. A sander according to claim 1, wherein the plates are providedexternally with a pair of corresponding pads or resilient material suchas sponge rubber and the like to pad the sand paper.

3. A sander according to claim 2, wherein the means for attaching thesand paper includes a pair of clamps individually mounted upon the innersides of the plates and each including an elongated member and a screwprojecting through a portion of the clamp and having an adjusting wingnut upon the screw for tightening the elongated clamp member against theplate to grip the end of the sand paper thereon.

4. A sander according to claim 3, wherein the handle mounting includes atube member having an open end slot into which the bracket extends andupon the opposite end a thread with which a handle may be engaged inline with said tube member.

5. A sander according to claim 4, wherein at least one arcuate leafspring is secured at one end to the rear inner portion of one plate andat the other end to a corresponding rear inner portion of the otherplate, said spring determining the angle of the plates.

References Cited in the file of this patent UNITED STATES PATENTS1,501,192 Severus July 15, 1924 1,562,415 Newman Nov. 17, 1925 2,066,829Erickson Jan. 5, 1937 2,233,565 Whelan Mar. 4, 1941 2,417,356 Field Mar.11, 1947 2,523,884 Swenson Sept. 26, 1950

